Boring bit



FIG. 1 is a front view of a boring bit showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view of a modification thereof;

FIG. 6 is a side view of the modification thereof;

FIG. 7 is a top view of the modification thereof; and

FIG. 8 is a bottom view of the modification thereof. 

The ornamental design for a boring bit, as shown and described. 